how do i get rid of my error

[sparky159357]

i need to get rid of my error just compile and run
help!!!
it is for adding up monthly income dont copy my idea!!!

help i am n00b

i know alot of stuff is not used it is not even half way done!!

ps it is very messy i have still not cleaned it up

pss my batery is dieing so i have to type fast i deleted a section and cant get it back what i am trying to do is add up the array Bnum HELP!!!!!

import java.util.Scanner;
 
public class Money {
    public static void main(String[] args){
 
        Scanner Scan = new Scanner(System.in);
        double Income, Tax, TaxTotal, Bills, OfficeSpace, LeftOver, Bill;
        int NBill, i, a, b;
 
        Bills = 0.;
        i = 1;
 
        System.out.println("Imput this month's income:");
 
        Income = Scan.nextDouble();
 
        System.out.println("Your current balence is $" + Income );
        System.out.println("How much of your income will you save for tax? (percentage, no percentage sign, whole num.)");
 
        Tax = Scan.nextDouble();
 
        System.out.println("$" + Income * (Tax / 100) + " goes to the Unchel Sam.");
 
        TaxTotal = Income * (Tax / 100);
        Income = Income - TaxTotal;
 
        System.out.println("Your new current balence is $" + Income );
        System.out.println("How many bills do you have?");
 
        NBill = Scan.nextInt();
 
        double[] Bnum = new double[NBill];
        Bnum[0] = 0;
 
        do{
            System.out.println("how much is value of bill " + i);
            Bnum[i] = Scan.nextDouble();
            i++;
 
        }while(i <= NBill);
 
 
 
        \\ this is deleted part
 
 
        System.out.println("Your new current value of used money is $" + Bnum);
 
 
 
    }
}

[Dheeraj Joshi]

OK. What you want to achieve? And what error's you are getting?

I suspect you are getting array index out of bound exception.

System.out.println("Your new current value of used money is $" + Bnum);
 

What you want to print here?

Please post error messages too. And please wrap the code in code block.

Regards
Dheeraj Joshi

[sparky159357]

@dheerajjoshim
the error is Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 2
at Income.main(Money.java:37) the 2 is for how many bills you say you have so if i say i have 5 bill then the 2 will change to a 5

i am trying to make it so i can put in my monthly income and see how much money i have left over so say i made $200 this month (i am not poor) i would save 20% for tax then i say how many bills i have and the i add it up.

i am new at this i am only half way through the java book i am reading so if you have any recommendations i would happily take them.


also i see your picture is the eclipse symbol if you know any tricks for the program it would be much appreciated

sorry there is a bunch of stuff not used i am a very unorganized person and i half been trying to fix this error for 3 days strait last night was the only night i got some sleep

thank you for taking your time to help me

[jkmyoung]

Indexes start at index 0.
Change it to
while(i < NBill);
removing the equal sign.
Couldn't you tell you were trying to input one too many bills?

[sparky159357]

@jkmyoung
i have not slept in 3 days how should i know and plus i changed it and ran it and it said (this is what the entire program said )
"Imput this month's income:
200
Your current balence is $200.0
How much of your income will you save for tax? (percentage, no percentage sign, whole num.)
20
$40.0 goes to the Unchel Sam.
Your new current balence is $160.0
How many bills do you have?
2
how much is value of bill 1
2
Your new current value of used money is $[D@1fb8ee3
"


compile it and run you will see what i mean

[Dheeraj Joshi]

System.out.println("Your new current value of used money is $" + Bnum);
 

It Should print the value in ith index.

So change it to

System.out.println("Your new current value of used money is $" + Bnum[index]);
 

Regards
Dheeraj Joshi

[sparky159357]

@dheerajjoshim
i tried that and it gave me an error the error is
Exception in thread "main" java.lang.Error: Unresolved compilation problem:
index cannot be resolved

at Money.main(Money.java:42)




thanks for the help i am so frustrated i have been dreaming about ways to fix the program

[Dheeraj Joshi]

System.out.println("Your new current value of used money is $" + Bnum[index]);
 

Should not be this inside the while loop?

Regards
Dheeraj Joshi

[sparky159357]

@dheerajjoshim
it is not my entire script is

import java.util.Scanner;
 
public class Money {
    public static void main(String[] args){
 
        Scanner Scan = new Scanner(System.in);
        double Income, Tax, TaxTotal, Bills, OfficeSpace, LeftOver, Bill;
        int NBill, i, a, b;
 
        Bills = 0.;
        i = 1;
 
        System.out.println("Imput this month's income:");
 
        Income = Scan.nextDouble();
 
        System.out.println("Your current balence is $" + Income );
        System.out.println("How much of your income will you save for tax? (percentage, no percentage sign, whole num.)");
 
        Tax = Scan.nextDouble();
 
        System.out.println("$" + Income * (Tax / 100) + " goes to the Unchel Sam.");
 
        TaxTotal = Income * (Tax / 100);
        Income = Income - TaxTotal;
 
        System.out.println("Your new current balence is $" + Income );
        System.out.println("How many bills do you have?");
 
        NBill = Scan.nextInt();
 
        double[] Bnum = new double[NBill];
        Bnum[0] = 0;
 
        do{
            System.out.println("how much is value of bill " + i);
            Bnum[i] = Scan.nextDouble();
            i++;
 
        }while(i < NBill);
 
        System.out.println("Your new current value of used money is $" + Bnum[index]);
 
 
 
    }
}

and it still gives me an error

thanks for the help

[Dheeraj Joshi]

index is undefined in your program. Move your print statement inside the while loop. In my last post i gave you the example. Not exact code.

System.out.println("Your new current value of used money is $" + Bnum[i]);
 

Note: You need to print it before incrementing i.

Regards
Dheeraj Joshi